Swing-truck for locomotives.



K. RUSHTONI4 SWING TRUCK FOR LOCO'NIOTIVES.

APPLICATION FILEDMAR. e. 191s.

1 ,272, l 18. Patented July 9, 1918.

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K. HUSHTON.

Swmc TRUCK FOR LoCoMolvEs.

APPLICATIONl FILED MAR.6.1916.

Patented July 9, 1918'.

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K.l RUSHTON.

SWING TRUCK FOR LOCOMOTIVES.

APPLICATION FILED MAR. 6. ISIS.

1 ,272, l 18. Patented July 9, 1918.

3 SHEETS-SHEET 3.

ITED STATES PA E I KENNETHHUSHTON, oF PHILADELPHIA, PENNSILVANIA, AssIGNoR To THE BALDWIN vLoeoI/Io'IIvF WORKS, or PHILADELPHIA, PENNSYLVANIA, A. CORPORATION oF PENNSYLVANIA.

Y Y Application led March 6,

To all 'whom t may concern.:

Be it known that I, KENNETH RUsHToN, a citizen of the United States,`residing in Philadelphia, Pennsylvania, have invented certain Improvements in SwingTrucks for Locm'otives,{of' which the followingis a specification.

Myinventio'n relates to certain improve ments-lin swing trucks", 'particularly those adapted to be located under a locomotive. j

The object of the inventionis toV design the ltruck so jthatv it will readily accommodate 'itself 'tothe' lateral vmovement of the lbody; of'thelocomotive when passing around vl curves vorion uneventracks, and is particularly deslgned for-narrow* gage 'locomotives which are used onl railways'having sharp curves.

' In the accompanying drawings:

Figure 1 is a transverse `sectional view on the line y1-'1,l Fig.2; Yillustrating my improved vswing truck.' f 'f Fig. 2 is a side view;

Fig. 3 is an inverted plan `View. of the rocker; 'Y'

"Fig 4 isa perspective view of' the rocker bolt; l l y p,

``rFig.V4 5 is Aa front view illustrating a type `ofjtruck in'which the Vvswing links are dis'. 'pensed'with;'

'.Fig. 6' is a side view of the truck shown in F-ig 7 is a plan'viewof the same;

1 ,Fig. Slis va transverse sectional'view illusy invention-'as applied to a four Fig. 101s a'persp'ective view ofthe rocker frame. used inthe construction illustrated JK-'Re errin'g linthe :"irst instance-'to Figs. .11"to" 4inclusivegwhich illustrate a swing 'truckin which swing -links gare used in addition -to my improve'd'rocker, 1 is a center f pin which is pivote'd ft'o the' framefof a loco- .'motilive,l and onI this pin are cast `spring seats 2.v 3 isthetruckframelhavin Abearin,'g`s"ffo`r ithe faxle41on which are l'the-'w eels' 5.5 v This -type of truck has a singleaxlevand* two 10, 10 are theV swing links made integral withthe pivot pin -'adapted to bearings 7 in 'the 11.PPe11PQrt9n gf the, 3 and specifieatiegi of Letters Patent.

SWING-TRUCK Foa LocoivIoTIvEs.

Patented July e, 191s.

191s. seriallvaazoes.

held in the bearings by a clamp plate 8 and bolts I9.- The links' 10'are connected at their lower ends by pins 11 to the arms 12 'of the lrocker frame 13. This rocker frame is jU-shaped, as illustrated in Fig. 2, and one swing link is attached to one arm and the other swing link lis attached to the other arm, as shown clearly in said figures. The bearing surface 14 of'this rocker frame is curved,"as shown in Fig. 1, so 'that-it will rock 'against the under side ofthe center pui. Y

f In orderto yieldingly connect the rocker frame to the bearing, I mount within the `center pin a coiled spring 15. A bolt 16 extends through this spring and through an opening 17 in the bottom of the center pin l and has a T-head 18 curved on its upper'jside, as 'clearly shown in Fig. 4, and this curved head is adapted to a socket 19Von the :under side of the rocker frame 13, as clearly shown in Fig. 3. On the upper end of the bolt are two nuts 2O and located in the center pin 1 is a spring plate 21 forming an Vupper bearing for the spring 15. When the 'frame 13 swings on links 10 tothe limit of itsk capacity a strain, due to the curvature lof the track, is then placed upon the bolt 16 and compresses the spring 15, which permits an additional Ylateral movement by reason ofthe frame 13' rocking on the curved surface 14 Aagainst the under side of the center pin 1', which remains unyieldingly pivoted Y -to the locomotivevframe. The spring 15 also tends to'return the frame to itsnormal position.

` The truck illustrated in Figs. 1 and 2 is V'particularly adapted for use in connection 4 ryingthe center pin 1 not only swings on the links of the rocker frame 13 but also rocks on the 'bearing,'sothat thel extended lateral movement of the frame of the locomotive cany be accommodated by this constructionV 'g v InA some instances, where the locomotive is designed Afor the tracks of a railway in which the truck needy not accommodate an @Xtreme lateral mesmemfthevng .Hele f Y may be dispensed with, Vas illustrated in Figs. 5,' 6 and 7. In this instance, the

rocker frame 13a is connected by a pinY ll directly to the truck frame l5e, the'frarne 13e 'rocking "on the bearing 15a-nd accommodating itself to the lateral movement of the locomotive body. Y

While my inventiony is particularlyv adapted to the two wheel trucks show'nin Figs. 1 to 7, inclusive, the inventioncan be applied to four wheeled trucks, such as that illustrated in Figs. 8 yto 105 inclusive. Q Y Y22 isthe centergbearing' on which the body ofI the locomotive,Y ork car,l jis mounted,Y and Y this center bearing isrecessed'at 23 on each sir-de of the center and hasvanhopeningjfor the passage of two swingboltsV 16% each provided et bsupper end with, a, beveled head 18,;wliicli rests at thebottom of Lthe rlecessn23.V The opening in the center vplate for thewpassage ofthe pin is suificient to allow, the pin to have a certain amount of lateral movement. vthe pin t are nuts 20a forrcarrying ajspring plate 213011- which rests a spring 15?. UA spring block 24 is carried bythe spring 15?. l. Each pin passes through a `U-shaped frame 13a, Fig 1.0,;beveled1, or rounded, at eaclil edge;v and lits against the undervv side of the 'center bearing 22. Each frame is preferably located inw-a recess formed by lugs or flanges 25.V Thearms 12a of each Vrocker framel are connected by Vpivot Ypins 2 6 I to 'the' transverseubars 27, which form the swing bolster. vThis bolster 27li'svc0upledto the frame of the ear 28,'*bylkinls 29, asl shown in Figs. 8 and 9. v By this construction,l the truck frame can movelaterallyjto Va certainextent by merely swinging onzthelinks 29; but the moment the lateral movement isV increased beyondthe -limit of the links, the bolster' 27 will ,swing from vthe center bearing through the -forkedarnis 13a, which rock'against the underside of the-center plate. Thevsprings accommodate "themselves to this movement and tend to re- 1 turn the parts to their normal position.

V.to 7*, inclusive, the center pin '1s bearing In order to ,limit themovement oftherocker frame,y I providestops 3() or-the swingbolster, "asnlearlyf shown in Fig. 8 by. dotted lines: Y, Y 1* By this' Vimprovement an. extended lateral movement isV obtained in a fouror a six wheel truck- -ff zA Vin YIn the constructiony illustrated in Figs. f1

carried the'lo-comotive and in Figs. 8 to i V '.10',^inclusive, the center plate 22 is the center bearing.. 1,' :al i., 11;. j" ,y 1. The combination in a swing truck.- of a Vcenter bearing carried 4by the locomotive or carvbody; a truck; 'a rooker'framepivoted to the truck and arrangedto rock against the Ycenter bearing; and aspx-'ing carried by On the lower end of` the @emer'beari'ng and tending to hoi-dite truck frame, said rocker framevvresting 'against the under side of the center bearing;

and aspring tending to draw the rocker frame against the center bearingY and to return the rocker frame-to its-cent'al''fposr-` tion. Y'

3.-., The combination in swing truck,V of a Y centerpin truck frame having bea-rings frame agalnst the bearing and to return the so,A

vfor an ax'lega rocker .frame resting against Y the'under side ofthe'xoe'ntei? pin; links con-` necting the rocker frame withftheftruck .franieta spring located'in the'center; pin;

and a bol-t sijipportedbyy said spring tend:-

ing to v'normal-lyV `retain ltheioclierV frame in th; central positionjt.- yThe combination-of a center pinadapb ed to the `frame 'of-a locon'iotive;v ori car ya spring plate .located in thebearing'; aspring between the'plfatel andthe .bottom of the oenterj pin; ajrocler:frame.underlthepin; a.

bolt extendin'gthrough the sprirfgplate and spring, through the center pin,- andthrough the upper portionV of thev rockerjJfrane and having aIlheadwpi-ovided with Y.arriund 1 bearing surface Aada ted Wto a socketain the undei` side of the roc er .frarne and a truck frame connected to the rocker frame. Y

` 5.{ The combination of a Swing truck; a center pin adapted to the frame of aloco;

motive? for v ca-r; a rocker having a curved upper surface bearing against the under lside oftheoenterpin; a-spring and. bolt connection between the 'rocker andthepin;

anda link connection between ,the "rocker ;t

ajnd the truck so" that under' certain conditions the lateral movement Vwill bei'takn bythe links and the` extendedlaterel Ir'i'vement will. be taken by; the spring and rocker.

locomotives', Vof a center pin adaptedfto the axle mounted in bearings ontheftruck .6. The combination in' 'ia swing: i',rucli ,forV ar surface of the rocker'fframefbeing curved; I1;-

a boltI extending throughthzrobkeiframe; andi. t spring tending" -tod'ravvA the-',boltand l tlerocker franieagainstlthe;centepirr;

i f v 57.'. The l combinfation in'. a Ysingle Vswing Struck fonlooomotivesg ofkn :centergjpn farranged to be Ypivoted to the frame of a .loco-.f i

motive, Said pin beingho'llow; truck frame; axlehaving its; bearings inthe ytruck; frame; almk located4 in each side of the truck frame; a pivotl pin mounted in frame and extending through the frame and the upper portion of the truck frame and through the hollow center pin; a coiled through Which the links are suspended; a spring located in the center pin; a Spring 15 U-shaped rocker frame having arms explate mounted above the spring, the bolt 5 A tending on each side of the truck frame beextending through the spring and the spring yond the links, said links being pivotally plate; and nuts on thebolt, the spring tendconnected to the lower portion of the rocker ing to hold the rocker against the bearing frame, the upper portion of the rocker frame and to return the rocker to its normal posi- 20 being curved so as to allow the rocker and tion.

10 truck to swing laterally in respect to the In Witness whereof I aiiix my signature.

longitudinal line of the locomotive; a T- headed bolt having its bearings in the rocker KENNETH RUSHTON.

Copies of this patent may be obtained for ve cents each, by addressing the "commissioner of latents,

Washington, ID. 0." Y 

